mirror of
https://github.com/postgres/postgres.git
synced 2026-02-26 11:21:03 -05:00
8b1b342544
Up to now we just punted on showing the window definitions used in a plan, with window function calls represented as "OVER (?)". To improve that, show the window definition implemented by each WindowAgg plan node, and reference their window names in OVER. For nameless window clauses generated by "OVER (...)", assign unique names w1, w2, etc. In passing, re-order the properties shown for a WindowAgg node so that the Run Condition (if any) appears after the Window property and before the Filter (if any). This seems more sensible since the Run Condition is associated with the Window and acts before the Filter. Thanks to David G. Johnston and Álvaro Herrera for design suggestions. Author: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: David Rowley <dgrowleyml@gmail.com> Discussion: https://postgr.es/m/144530.1741469955@sss.pgh.pa.us
57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* ruleutils.h
|
|
* Declarations for ruleutils.c
|
|
*
|
|
* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/utils/ruleutils.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef RULEUTILS_H
|
|
#define RULEUTILS_H
|
|
|
|
#include "nodes/nodes.h"
|
|
#include "nodes/parsenodes.h"
|
|
#include "nodes/pg_list.h"
|
|
|
|
struct Plan; /* avoid including plannodes.h here */
|
|
struct PlannedStmt;
|
|
|
|
/* Flags for pg_get_indexdef_columns_extended() */
|
|
#define RULE_INDEXDEF_PRETTY 0x01
|
|
#define RULE_INDEXDEF_KEYS_ONLY 0x02 /* ignore included attributes */
|
|
|
|
extern char *pg_get_indexdef_string(Oid indexrelid);
|
|
extern char *pg_get_indexdef_columns(Oid indexrelid, bool pretty);
|
|
extern char *pg_get_indexdef_columns_extended(Oid indexrelid,
|
|
bits16 flags);
|
|
extern char *pg_get_querydef(Query *query, bool pretty);
|
|
|
|
extern char *pg_get_partkeydef_columns(Oid relid, bool pretty);
|
|
extern char *pg_get_partconstrdef_string(Oid partitionId, char *aliasname);
|
|
|
|
extern char *pg_get_constraintdef_command(Oid constraintId);
|
|
extern char *deparse_expression(Node *expr, List *dpcontext,
|
|
bool forceprefix, bool showimplicit);
|
|
extern List *deparse_context_for(const char *aliasname, Oid relid);
|
|
extern List *deparse_context_for_plan_tree(struct PlannedStmt *pstmt,
|
|
List *rtable_names);
|
|
extern List *set_deparse_context_plan(List *dpcontext,
|
|
struct Plan *plan, List *ancestors);
|
|
extern List *select_rtable_names_for_explain(List *rtable,
|
|
Bitmapset *rels_used);
|
|
extern char *get_window_frame_options_for_explain(int frameOptions,
|
|
Node *startOffset,
|
|
Node *endOffset,
|
|
List *dpcontext,
|
|
bool forceprefix);
|
|
extern char *generate_collation_name(Oid collid);
|
|
extern char *generate_opclass_name(Oid opclass);
|
|
extern char *get_range_partbound_string(List *bound_datums);
|
|
|
|
extern char *pg_get_statisticsobjdef_string(Oid statextid);
|
|
|
|
#endif /* RULEUTILS_H */
|